Feed-water regulator



2 Sheets-Sheet-1.

(No Model.)

9 'J. W. DEARDUPF; E FEED WATER REGULATOR, GAS CUT-OPP, AND ALARM FORBOILERS. No. 598,499.

Patented Feb. 8, 1898.

Wage/saw (No Model.) 2 SheetsSheet 2.

J. W. DEARDUFF. FEED WATER REGULATOR, GASOUT-OPF, AND ALARM FOR BOILERS.

Patented Feb. 8

' ply to the furnace.

the mechanism illustrated by the accompany "ire STATES PATENT Prion.

JOHN WM. DEARDUFR'OF MOLLIE, INDIANAZASSIGNOR or ONE-HALF TO WM. J.BAKER, on MONTPELIER, INDIANA.

SPECIFICATION forming part of Letters Patent No. 598,499, dated February8, 1898. Application filed July 2, 1897- Serial No, 643,247. (No model.)

To all whom it may concern:

Be it known that I, JOHN WM. DEARDUFF, a citizen of the United States,residing at Mollie, in the county of Blackford and State of Indiana,have invented certain new and useful Improvements in Feed-WVaterRegulators, Gas Cut-Offs, and Alarms for Boilers; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same. My invention relates toimprovements in feed-water regulators, gas cut-offs, and alarms forboilers; and the objects of my invention are to construct amechanismthat will regulate the feed-water to the boiler, give an alarm in casethe feed-water stops or runs too low in the boiler, and shut off the gasor oil fuel sup- I attain these objects by ing drawings, in which-Figure 1 is a general or perspective view of my mechanism as applied toa boiler. is a vertical section of the overflow-valve and connectingparts, and Figs. 3 and 4 are detail views.

Similar letters and numerals refer to similar parts throughout theseveral views.

My invention consists in an arrangement of pipes, valves, 650., suitablyconnected to a boiler, which will be more fully understood from thefollowing description.

A is the gas or oil fuel supply pipe, which is provided with a shut-01fvalve B, located at the base of my mechanism a few feet from the boiler,as shown in Fig. 1. G is a saddle or yoke resting on and secured to thevalve 13. On the upper plate of the yoke O rests the water-overflowvalve D. One branch of the feed-water pipe (marked E) comes up throughthe yoke and enters the lower end of the valve D, all as shown in thedrawings.

The feed-water pipe E comes from an ordinary feed-pump or injector, suchas is used to feed boilers. It branches off by a T, as shown, one line Egoing up to the water-valve, forming an overflow, and the other line E"going directly into the lower part of the boiler. A check-Valve islocated in the line E to prevent back flow from the boiler, and a globe-Fig. 2.

valve is also located in the said line to use in case of repairs, &c. Abranch E is attached to the line E between the check and globe valves,as shown in the drawings, the said branch E reaching up and connectingwith the regulating parts, all as shown.

The water regulating or overflow valve D is located at about the waterline of the boiler, and on the side next to the boiler is a valve,

the stem F, which is connected to a copper tube G by means of a couplingF, and a T connection F, all as shown in Figs. 1 and 2. The tube Gextends almost to the boiler, being connected to it at a point on alevel with the water-line by a union G and a short piece of iron pipe G,as shown in Fig. 1. The copper pipe is thoroughly braced sidewise by tworods H H, the ends of the said rods being firmly secured to the plates Iand J. The tube G is threaded into the plate I and into the T connectionF, being free to slide in the center plate H by the hole in said platebeing some larger than the tube. plate H is held rigidly to thebrace-rods by set-screws, as shown, and the plate forms a brace for thetube G, all this construction being provided so that thetube maylengthen freely when it is heated by steam from the boiler, theexpanding and contracting of the tube causing the valve D to be openedand closed as the level of water in the boiler changes.

To the lower part of the T F is connected a short nipple and then across connection K is secured, from the lower end of which is connectedthe upper end of the branch E, all as shown in Fig. 1. To one of theside connections of the cross K is secured a branch pipe L. This pipe isprovided with three short nipples 1, 2, and 3, connecting and fittingthe line L to the line L, so that the lateral movement of the tube GWillnot be retarded. The line L enters the T connection M at the lowerend of the vertical copper expansiontube M, and below which is an outletor stop cock M to be used when necessary.

To the upper end of the tube M is a reduced coupling N, above and towhich is secured a cut-off 0. Between the said cut-oft The said andcoupling is secured a bracket N, (see 100,, I

Fig. 3,) in which is pivoted-a lever N. The flat end 0 of the cut-off ismade to engage in a notch N when the valve is open and the mechanism inuse. A short arm 0' and a weight 0 are secured to the flat projection Oof the cut-off, so that when the lever N is moved down the lever andweight 0 and 0" will turn the cut-off so water or steam cannot passthrough it. Above the cut-off O is a fitting 4, from which extends ashort pipe P, on the end of which pipeis an L, and above this rests aspring check-valve P. From one end of the check extends an arm Q andfrom.

the other end a short pipe 5, connecting to an L, turning again at rightangles and connecting to another pipe 6, then to a fitting 7, and thenturning down until at a point level with the valve vD, where the pipeturns again at right angles and connects into the said valve, all asshown in the drawings;

The operation of my mechanism is as follows: First, the boiler is filledwith water up to the proper line and then the gas-shutoff valve isopened by the stem R being raised up and the pawl R set in a notch inthe stem R, resting on the upper surface of the yoke 0, all as shown inFig. 1. Acoil-spring R is fitted to the stem and under side of the upperplate of the yoke, so as to press the stem R down. A wire S is fittedand adjusted between the pawl R and the arm Q, so that by the leastraise on the arm the pawl is drawnout of the notch, allowing the stem tospring down and shut off the gas. A lever or stop R is secured to thestem R, so that by inserting a pin R in one of the holes in the yoke thevalve may be set so that it will shut all or only a part of the gassoff. As soon as steam is up in the boiler the water is started from thepump or injector. The water enters the boiler through the pipes E E, andthe flow is set to run just a little more water than the boiler issupposed to require, the surplus going up out through the line E. Theoverflow is regulated by the valve D and expansion-tube G, the operationof which is as follows: The tube G is set on the water-line,and ittherefore either contains water or steam all the time. If the water runsbelow it in the boiler, the steam enters the tube, forcing the waterback and heating and expandin (lengthening) the tube, thereby olosingthe water-passage through the valve D, and the water then all enters theboiler. As soon as the water is ahead or above tube Gthe water enters itfrom below through the pipes L and E, (and from the boiler through pipeG,) filling it with cold water, causing it to contract, and drawing thevalve T away from the seat T, allowing a portion of the feed-water toescape up through the valve D and out through the upper part of theoverflow-line E. This operation of opening and closing of the valve D Tis going on more or less all the time as the condition of the waterchanges in the boiler, so that the water is practically kept at ornearly one place in the boiler all the time.

Should. an accident happen to the feed-water supply by the pump orinjector failing to work, the mechanism will act as follows: The waterrunning below the proper line or below the connection G, steam entersthe expansion-tube G, closes the overflow-valve D T, and steam entersthe line L L, passing in at the bottom of the tube M, going up andtoreing the cold water up out of it around through the pipes 4, 5, 6,and 8, back into the valve D, and as soon as the steam fills upthe tubeM it, being made of copper, will expand or lengthen, rising up with thepipe et and checkvalve P, which causes the lever Q, to rise, pulling therod S, displacing the pawl R, and allowing the stem R to drop down, andin dropping it pulls the wire U down, and the wire being connected to awhistle X sounds the alarm. At the time the wire is pulled down thelever N is tripped bya knot U, so that the weight 0 will close thestop-valve O, preventing steam from escaping back into and through thepipes E and E.

The arrangement of the pipes and connections 4, 5, 6, and 7 at the topof the tube M is for the purpose of allowing a free rise or upwardmovement of the tube and at the same time increase the length of thepull on the rod or wire S.

I may make minor changes in the arrangement of my mechanism to suit thedifferent kinds of boilers or for special purpose without departing frommy invention.

Having thus described my invention, I claim the following and desire tosecure the same by Letters Patent:

1. In a feed-water and fuel regulator and alarm for boilers, thecombination with the feed-water pipe and fuel-feed pipe, of awastepipeleading from the feed-water pipe, a Valve in the waste-pipe, anexpansion-tube leading from the water-line in the boiler controlling thevalve, a check-valve in the feed-water pipe, a connecting-pipe Eextending from the feed-water pipe between the check-valve andboiler andconnected to the expansiontube, an expansion-tube M connected to theconnecting-pipe, avalve in the fuel-pipe and means connecting the valveand expansiontube M for closing the valve upon the expansion of the saidtube.

2. In a feed-water and fuel regulator and alarm for boilers, thecombination with the feed-water pipe and fuel-feed pipe, of awastepipeleading from the feed-water pipe, avalve in the waste-pipe, anexpansion-tube leading from the water-line in the boiler controlling thevalve, a check-valve in the feed-water pipe, a connecting-pipe Eextending from the feed-water pipe between the check-valve and boilerand connected to the expansiontube, an expansion-tube M connected to theconnecting-pipe, a branch pipe leading from IIO the expansion -tube M tothe waste-pipe, a valve in the fuel-pipe, and means connecting the valveand expansion-tube M for closing the valve upon the expansion of thesaid tube.

3. In a feed-Water and fuel regulator and alarm for boilers, thecombination with the feed-Water pipe and fuel-feed pipe and alarmmechanism, of a Waste-pipe leading from the feed-water pipe, a valve inthe Waste-pipe, an expansion-tube leading from the water-line in theboiler controlling the valve, a connect ing-pipe E extending from thefeed-Water pipe and connected to the expansion-tube, an expansion-tube Mconnected to the connecting-pipe, a valve in the fuel-pipe, meansconnecting the valve and expansion-tube M for closing the valve upon theexpansion of said tube, and mechanism for actuating the alarm mechanismupon the closing of the valve.

4:. In a feed-Water and fuel regulator and alarm for boilers, thecombination with the feed-Water pipe and fuel-feed pipe,of a wasteingthe valve and actuating the alarm mechanism upon the expansion of thetube.

5. In a feed-Water and fuel regulator and alarm for boilers, thecombination with the feed-water pipe and fuel-pipe, of a Waste-pipe 3 5leading from the feed-Water pipe, a valvein the Waste-pipe, means forcontrolling the valve, a pipe leading from the water-line in the boiler,a connecting-pipe E extending from the feed-Water pipe to the pipeleading from the boiler at the Water-line, a pipe leading from theconnecting-pipe E at a point opposite the low-Water line of the boiler,an expansion-tube on the end of said pipe, a

branch pipe connecting the expansion-tube I and Waste-pipe, acheck-valve in the branch pipe, a valve normally open in theexpansiontube, a valve in the fuel-pipe, means connecting the valve andexpansion-tube for closing the valve upon the expansion of the tube andmechanism for closing the normally open valve in the expansion-tube uponthe closing of the valve in the fuel-pipe.

In testimony whereof I- affix my signature in presence of two Witnesses.

JOHN WIWI. DEARDUFF.

Witnesses:

J. E. OWEN, A. S. CASTERLINE.

